In John R. Ehrman's SHARE presentations on tips for modernizing IBM
z/Architecture assembler programs (such as
https://share.confex.com/share/120/webprogram/Handout/Session12522/modrnasm.pdf),
he says that important advice from experienced assembler programmers is to:
_Don't_ use EQU for statement-label creation
Can anyone venture a guess as to the reason for this advice? I've been coding
MVS assembler for 30 years and this is the first I've heard of this guideline.
One thing I'm wondering is if the suggestion is to avoid stand alone statement
labels entirely (such as LABEL EQU * or LABEL DS 0H) in favor of putting the
label on the next instruction? Or is there something about EQU * that makes it
a bad alternative to DS 0H?
__
Michael Schmitt | DXC.technology
DXC Technology Company - Headquarters: 1775 Tysons Boulevard, Tysons, Virginia
22102, USA.
DXC Technology Company -- This message is transmitted to you by or on behalf of
DXC Technology Company or one of its affiliates. It is intended exclusively
for the addressee. The substance of this message, along with any attachments,
may contain proprietary, confidential or privileged information or information
that is otherwise legally exempt from disclosure. Any unauthorized review, use,
disclosure or distribution is prohibited. If you are not the intended recipient
of this message, you are not authorized to read, print, retain, copy or
disseminate any part of this message. If you have received this message in
error, please destroy and delete all copies and notify the sender by return
e-mail. Regardless of content, this e-mail shall not operate to bind DXC
Technology Company or any of its affiliates to any order or other contract
unless pursuant to explicit written agreement or government initiative
expressly permitting the use of e-mail for such purpose. --.
